Home / 191,577.40-287,366.10-66,902.20

Finding the Fourth Proportional to 191,577.40, 287,366.10 and 66,902.20

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Solution

The fourth proportional to 191,577.40, 287,366.10 and 66,902.20 is: 100,353.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,577.40 : 287,366.10 = 66,902.20 : x
  2. Step 2: Convert to fraction form
    191,577.40/287,366.10 = 66,902.20/x
  3. Step 3: Cross multiply
    191,577.40x = 287,366.10 × 66,902.20
  4. Step 4: Simplify right side
    191,577.40x = 19,225,424,295.42
  5. Step 5: Solve for x
    x = 19,225,424,295.42/191,577.40
  6. Step 6: Final answer
    x = 100,353.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.